Improvement in key-hole guards for locks



E. W. -MoFFATT KEY-HOLE GUARDS FORYLOCKS.

Pa'tented March 1.3, 1877.

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".PETERS. FHDTOLITHOGRAFHER. WASHINGTON. D vC.

UNITED STATES PATENT OEEIcEs ELIJAH w. MOEEATT, OE HYDE PARK,MASSACHUSETTS.

IMPROVEMENT IN KEY-HOLE/GUARDS FORl LOCKS.

Specification forming part of Letters Patent No. 188.302, dated March13, 1877; application filed February 6, 1877.

To all whom it may concern Be it known that I, ELIJAH W. MOEFATT, ofHyde Park, of the county of Norfolk and State of Massachusetts, haveinvented a new and useful Safety Attachment or Key-Hole the outside ofthe door.

In the drawings, A denotes the door, and B a mortise-lock letinto suchdoor in the usual `manner. 4The key-hole to the bolt is shown at a asextending through an escutcheon-plate, C, having projected from it anarm, D, provided with a slot, b, as shown, such slot being i extendedinto the door and the back plate of the lock-case. Within such case, andbeneath the bolt, is a gate, E, which is to be applied so as to becapable of being slid across the keyhole, so as to cut off any passagethrough it into the lock. From this gate a shank, c,

` provided with a knob, d, extends through the slot b, in manner asrepresented. There is pivoted to the slotted arm D a latch, G, providedwith two notches,` e f, to receive the shank c in its extreme positions,and serve to hold the gate from being moved either forward or backward.

When the key is in the key-hole, the gate is entirely out of it, andwill be held in 4place by the latch. After having locked the bolt andremoved the key from the key-hole, and advanced the gate so as to closethe passage into the lock, such gate may be kept in place by turningdown the latch.

l claim as my invention as follows:

1. The key-hole escutcheon -plate C, pro.- vided with the slotted arm Dand the duplex notched latch Gr, arranged and applied as set forth.

2. The gate E, its shank c, and the duplex notched latch G, arranged andcombined with the lock B, the door A, and the key-hole a, substantiallyas and to operate as specified.

ELIJAH W. MOFFATT.

Witnesses:

L. N. MLEEE, J. R. SNOW.

